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0:00 Intro
0:37 PSIA
0:50 PSIG
1:31 Convert PSIA to PSIG
2:00 Conclusion

Here's a helpful chart to determine atmospheric pressure at different elevations:
https://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html

In this video, we look at how PSIA and PSIG relate to the oil and gas industry.

PSIA stands for pounds per square inch absolute. Absolute pressure is pressure relative to zero or absolute vacuum. You may see PSIA used on engineering documents or P&IDs.

PSIG stands for pounds per square inch gauge. Gauge pressure is a pressure relative to atmospheric pressure. Gauge pressure is what most analog gauges on your oilfield valves and equipment will show.

Leave a comment below if you have any questions! Some question can be answered online, but for detailed technical support, email [email protected] and mention which video you're referencing.

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